News 23.7.2021

Precipitation can be modeled more accurately with high-resolution numerical regional climate models

High resolution numerical regional climate models are needed, in particular, for the reliable modelling of short-term rainfall. Regional climate models can thus be used to study the impacts of climate change on heavy rainfall in more detail.
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The study assessed the ability of the HARMONIE-Climate regional climate model to model the precipitation of Southern Sweden. Based on the study, a more accurate resolution (3 km) improved the illustration of short, heavy rainfall and the daily rainfall cycle in the model.

The climate model simulations used in the study were implemented in cooperation with the Norwegian, Swedish, Finnish and Danish Meteorological Institutions within the framework of the Nordic Convection Permitting Climate Projections (NorCP) project.

More information:

PhD Researcher Erika Toivonen, Finnish Meteorological Institute, tel. +358 50 440 9311, Olsson, J., Du, Y., An, D., Uvo, C. B., Sörensen, J., Toivonen, E., Belušić, D., and Dobler, A.: An Analysis of (Sub-)Hourly Rainfall in Convection-Permitting Climate Simulations Over Southern Sweden From a User’s Perspective, Front. Earth Sci., 9, 516, doi:10.3389/feart.2021.681312, 2021.

You can read the scientific article here.

Lind, P., Belušić, D., Christensen, O., Dobler, A., Kjellström, E., Landgren, O., Lindstedt, D., Matte, D., Pedersen, R., Toivonen, E., and Wang, F.: Benefits and added value of convection-permitting climate modeling over Fenno-Scandinavia, Clim. Dyn., doi:10.1007/s00382-020-05359-3, 2020.

Information about the NorCP-project here.

Belušić, D., de Vries, H., Dobler, A., Landgren, O., Lind, P., Lindstedt, D., Pedersen, R. A., Sánchez-Perrino, J. C., Toivonen, E., van Ulft, B., Wang, F., Andrae, U., Batrak, Y., Kjellström, E., Lenderink, G., Nikulin, G., Pietikäinen, J.-P., Rodríguez-Camino, E., Samuelsson, P., van Meijgaard, E., and Wu, M.: HCLIM38: a flexible regional climate model applicable for different climate zones from coarse to convection-permitting scales, Geosci. Model Dev., 13, 1311–1333,, 2020.

Information about the HARMONIE-Climate model here.

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